Stringed Instrument Tuning Device with Cam and Linkage Mechanisms
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing devices for retuning stringed musical instruments during performances are often inconvenient, requiring significant modifications or being difficult to switch between tunings, limiting the versatility and harmonic variations available to musicians.
Innovation Solution
A device that attaches to the string assembly of stringed instruments, allowing each string to be instantly retuned by adjusting the length and tension using a lever-actuated tuner, enabling quick changes between preset tones without the need for tools, with embodiments featuring a cam or two-bar toggle linkage to position the string anchor and adjust the string's pitch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing retuning devices are used, then string tension can be adjusted, but the device requires significant modification of the basic instrument and is difficult to operate during performance
Solution Approach 1:
The tuner is designed to be attached to and removed from the instrument without tools, allowing the musician to service the tuning mechanism themselves during performance without requiring professional intervention or complex installation procedures
Solution Approach 2:
The device incorporates a lever that can be quickly actuated to change string tension dynamically during performance, allowing instant switching between different tunings without the slow, manual process of traditional pegs or clips
2Adaptability or versatility
If existing retuning devices are used, then string pitch can be changed, but switching between tunings is slow and inconvenient during performance
Solution Approach 1:
The device is pre-configured with a lever mechanism that has been positioned and prepared in advance, so that when the musician needs to change tuning, they simply need to actuate the lever without any preliminary adjustment or preparation steps
Solution Approach 2:
The tuning mechanism is divided into discrete, independently controllable segments (one lever per string or group of strings), allowing the musician to change only the specific tuning needed rather than adjusting the entire instrument, thus reducing time loss
3Adaptability or versatility
If existing retuning devices are used, then some tuning changes are possible, but the device structure becomes overly complex requiring significant instrument modification
Solution Approach 1:
The tuner is designed as a universal device that can be attached to various stringed instruments without custom modification for each instrument type, providing multiple functions (tuning, retuning, pitch changing) through a single standardized mechanism that simplifies the overall system
Solution Approach 2:
The tuning function is extracted from the basic instrument structure and implemented as a separate, attachable device, allowing the retuning capability to be added without permanently modifying the instrument's fundamental construction or requiring complex integration into the instrument's existing mechanisms
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables musicians to easily switch between tunings during performances, increasing the instrument's versatility and harmonic possibilities by allowing instant changes to string pitches, enhancing musical performance capabilities.
Implementation Method 1
with embodiments featuring a cam or two-bar toggle linkage to position the string anchor and adjust the string's pitch
Implementation Method 2
with embodiments featuring a cam or two-bar toggle linkage to position the string anchor and adjust the string's pitch
Implementation Method 3
Actuating a lever on the invented tuner changes the length of the tuner by a predetermined amount, and thereby changes the tension in the string, and correspondingly its natural frequency
Data Source
AI summary
A device for setting the tension in a string of a stringed musical instrument whereby a musician can instantly retune the string to play either one of two predetermined notes by merely actuating a lever. The device is preferably attached between the tailpiece or body of the instrument and an end of the string. The element of the tuner to which the string is attached (a string anchor) moves with a rectilinear motion to change the string tension. Two embodiments are disclosed, one of which used a rotating cam to position the string anchor, and the other of which uses a two-bar linkage to position the string anchor.